Objecting on complexity for outspread process of HTDA, apply three-floor BP net to identifying system and set up identifiable dynamic model.
针对该天线展开过程的复杂性，利用三层BP神经网络对系统进行辨识，并建立了动态辨识模型。
The large Hoop Truss Deployable Antenna (HTDA) in the space, with large aperture, light mass, big flexible character and so on, is type flexible multi-contact system.
空间大型环形可展天线具有展开口径大、质量轻、柔性大等特点，是一个典型的多柔体结构。
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